CyberPower SL900UC Standby UPS Battery Backup and Surge Protector

Name: CyberPower SL900UC Standby UPS Battery Backup and Surge Protector, 900VA/480W, 8 Outlets, USB‑C & USB‑A Charging, Slim Profile, UL Certified
Brand: Unbranded
SKU: B0GH34RNYP

Bottom line: The CyberPower SL900UC Standby UPS Battery Backup and Surge Protector is a specs-and-price decision rather than a crowd-consensus one in the power protection category. Check the specification table below against one or two close alternatives — on price and spec fit, not on star ratings.

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By Mike Perry, Founder & Editor-in-Chief · Listing data updated 2026-10-21

Mike Perry — Hardware researcher since 2014. For retro PC hardware and period-correct parts, synthesises manufacturer documentation, community compatibility lists and marketplace listings rather than first-hand lab testing. Core beat: GPU performance across gaming, rendering, and local-LLM inference. About the author →

Before you buy

Check the listed dimensions, connectors and platform compatibility against your setup before ordering
Used and vintage listings vary by seller and condition — check the listing photos, description and return terms before buying

Manufacturer description

The CyberPower SL900UC uninterruptible power supply (UPS) system provides robust battery backup and surge protection to safeguard sensitive electronics from power disturbances such as lightning‑induced surges, brownouts, and outages. With a 900VA/480W capacity, it offers extended runtime for connected devices, allowing users to safely shut down computers and prevent data loss during unexpected power failures. Equipped with both USB‑C and USB‑A charging ports, the SL900UC keeps mobile devices powered—even while running on battery. Its slim, modern profile supports discreet placement, and…

SpecPicks Verdict

SpecPicks scored CyberPower SL900UC Standby UPS Battery Backup and Surge Protector using a rating × review-volume × price-fit model applied to published specs and reviews across the power protection category. Compare with similarly-priced alternatives in the power protection category before committing. Judge it on the specification table and the price rather than on sentiment: check the figures that decide your use case, then put it side-by-side with two or three close alternatives in the Compare tool before clicking through.

Common buyer scenarios for power protection of this kind: matching it to an existing build, replacing a failing part, or upgrading from a previous-generation equivalent. Check the spec table below against your current setup — particularly socket / form-factor / power-rating fields — and confirm compatibility on the retailer's listing before purchase. Prices and stock are set by the retailer and may have moved since this page was last updated.

Key Features

900VA/480W Slim Profile Standby Uninterruptible Power Supply (UPS): Delivers simulated sine wave output to provide dependable battery backup power and protect home office electronics, gaming systems, home entertainment equipment, and networking devices from power interruptions and voltage fluctuations.
8 NEMA 5‑15R OUTLETS: Five battery backup & surge‑protected outlets and three surge‑only outlets. Includes two widely spaced outlets to support oversized transformer plugs. INPUT: NEMA 5‑15P right‑angle, 45‑degree offset plug with a five‑foot power cord for flexible placement.
USB‑C & USB‑A CHARGING PORTS: Integrated USB‑C and USB‑A ports provide fast charging for smartphones, tablets, and other mobile electronics—available even during a power outage. LED STATUS INDICATORS: Display Power‑On, Wiring Fault, and other essential system conditions at a glance.
GREENPOWER UPS HIGH‑EFFICIENCY DESIGN: Reduces energy consumption through an advanced, compact charger and power inverter, creating an ultra‑efficient backup power solution ideal for home and office environments.
3‑YEAR WARRANTY – INCLUDING THE BATTERY; Protected by a $100,000 Connected Equipment Guarantee and includes FREE PowerPanel Management Software (Download). UL SAFETY CERTIFIED: Tested in a UL‑certified lab and listed to meet or exceed rigorous safety and performance standards.

Full Specifications

Brand	CyberPower
Color	Black
Voltage	120 volts
Wattage	480 watts
Amperage	4 A
Unit Count	1 Count
Form Factor	Compact
Connectivity	USB
Model Number	SL900UC
Input Voltage	120 volts_of_alternating_current
Maximum Power	480 watts
Connector Type	NEMA
Output Current	0.53 A
Output Voltage	900 volts
Output Wattage	480 watts
Item Dimensions	3 x 13 x 5 inches
Mfr Part Number	SL900UC
Number of Items	1
Power Plug Type	Type B - 3 pin (North American)
Battery Cell Type	Other Than Listed
Full listing title	CyberPower SL900UC Standby UPS Battery Backup and Surge Protector, 900VA/480W, 8 Outlets, USB‑C & USB‑A Charging, Slim Profile, UL Certified

Ready to buy?

CyberPower SL900UC Standby UPS Battery Backup and Surge Protector, 900VA/480W, 8 Outlets, USB‑C & USB‑A Charging, Slim Profile, UL Certified is vintage hardware; the used and vintage market on eBay carries most of the live inventory. Prices and condition vary by seller and move in real time, so we link the live listing rather than quote a cached price. It also has an Amazon listing — check it for current price and availability. SpecPicks earns a small commission on qualifying purchases — thank you for supporting independent review work.

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